A circular knitting machine with needle selection function

Abstract

The present invention discloses a circular knitting machine with a needle selection function, which relates to the technical field of textile processing equipment. The present invention includes a shell, a knitting machine body is provided at the top of the shell, a connecting ring is rotatably connected to the top of the shell, a rotating mechanism used in conjunction with the connecting ring is provided on the lower inner wall of the shell, a card slot is provided at the top of the connecting ring, six card blocks are slidably connected to the inner wall of the card slot, and the tops of the six card blocks are fixedly connected to a vertical shell, one end of the six vertical shells is provided with a positioning mechanism used in conjunction with the vertical shell, the interior of the six vertical shells is provided with a lifting mechanism, and the tops of the six lifting mechanisms are fixedly connected to a yarn guide ring. The present invention facilitates free adjustment of the height of the yarn guide ring in the knitting mechanism by arranging the lifting mechanism, facilitates better positioning of the position of the yarn guide ring by arranging the positioning mechanism, and facilitates automatic rotation of the yarn guide ring during knitting by arranging the rotating mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of textile processing equipment, in particular to a circular knitting machine with a knitting needle selection function. Background Art

[0002] Circular knitting machine, scientifically known as circular weft knitting machine, or circular weft knitting machine, has developed rapidly and is widely used in the field of knitting machines due to its large loop forming system, i.e., the number of yarn feeding paths or loop forming paths, high speed, high output, fast pattern change, good fabric quality, few processes, and strong product adaptability.

[0003] According to the announcement number: CN110055672A, a circular weft knitting machine is disclosed. This technology discloses "including a creel, a plurality of yarn feeders distributed around the circumference of the creel, a yarn feed wheel rotatably arranged on the yarn feeder, and a driving mechanism arranged on the frame, the driving mechanism including a transmission wheel coaxially fixed with the yarn feed wheel, a synchronous belt passing around the plurality of transmission wheels and meshing with the plurality of transmission wheels, a power wheel rotatably arranged on the creel and meshing with the synchronous belt, a driving motor driven by the driving power wheel arranged on the creel, a slide arranged on the creel in a direction close to or away from the yarn feeder, an adjusting wheel rotatably arranged on the slide and meshing with the synchronous belt, and a driving assembly for driving the slide to slide, the yarn is drawn from the yarn bobbin and wound around the peripheral side wall of the yarn feed wheel. The present invention has the technical effects of adjusting the tension of the synchronous belt to prevent the synchronous belt from slipping with the transmission wheel, thereby improving production efficiency."

[0004] With regard to the above-mentioned related technologies, the inventor believes that, firstly, the height of the yarn guide ring in the existing knitting machine structure is generally fixed, and the fixed yarn guide ring cannot adjust the tension of the yarn during knitting according to actual conditions, which makes the use effect of the yarn guide ring poor, and there is no lifting mechanism, which makes it inconvenient to freely adjust the height of the guide ring; secondly, the distance between two adjacent yarn guide rings will also affect the knitting effect. Generally, the spacing between two adjacent yarn guide rings can be adjusted, but the knitting mechanism structure still has the problem of not being able to better position the position of the yarn guide ring, and the movement of the yarn guide ring during knitting will affect the knitting effect; secondly, when rotating the yarn guide ring, it is generally rotated manually, which is time-consuming and labor-intensive. There is no rotating mechanism, which makes it inconvenient to automatically rotate the yarn guide ring during knitting, reducing the convenience of using the knitting mechanism. Summary of the Invention

[0005] The purpose of the present invention is to provide a circular knitting machine with a needle selection function to improve the problems of being unable to freely adjust the height of the guide ring, being unable to better locate the position of the yarn guide ring, and being unable to automatically rotate the yarn guide ring during knitting.

[0006] The circular knitting machine with a needle selection function provided by the present invention adopts the following technical solutions:

[0007] A circular knitting machine with a needle selection function comprises a shell, a knitting machine body is provided at the top of the shell, a connecting ring is rotatably connected to the top of the shell, a rotating mechanism used in conjunction with the connecting ring is provided on the lower inner wall of the shell, a slot is provided at the top of the connecting ring, six blocks are slidably connected to the inner wall of the slot, and the tops of the six blocks are fixedly connected to a vertical shell, one end of the six vertical shells is provided with a positioning mechanism used in conjunction with the vertical shell, a lifting mechanism is provided inside the six vertical shells, and the tops of the six lifting mechanisms are fixedly connected to a yarn guide ring.

[0008] By adopting the above technical solution, six lifting mechanisms are used to facilitate the adjustment of the height position of the yarn guide ring, and the spacing between two adjacent yarn guide rings can be adjusted by using the card slot in conjunction with the card block. After adjustment, the position of the yarn guide ring is firmly positioned by the positioning mechanism, and the rotating mechanism facilitates the automatic rotation of the yarn guide ring during knitting, thereby improving the practicality of the knitting mechanism.

[0009] Optionally, the lifting mechanism includes a first support, one end of the first support is fixedly connected to one end of the vertical shell, the top of the first support is fixedly connected to the first motor, and the output end of the first motor passes through one end of the vertical shell and is fixedly connected to a round rod, one end of the round rod is rotatably connected to an inner wall of one side of the vertical shell, and two gears are fixedly sleeved on the outer surface of the round rod, and the outer surfaces of the two gears are meshed with tooth plates, one end of the two tooth plates are fixedly connected to the moving rack, and the two ends of the two moving racks are respectively slidably connected to the inner walls of both sides of the vertical shell, the top ends of the two moving racks are commonly fixedly connected to a connecting plate, and the top end of the connecting plate is fixedly connected to the bottom end of the yarn guide ring.

[0010] By adopting the above technical solution, the first motor is started, and the output end of the first motor drives the round rod to rotate, the rotation of the round rod drives the two gears to rotate synchronously, the synchronous rotation of the two gears drives the two tooth plates to move synchronously, the movement of the two tooth plates drives the two mobile racks to move synchronously, the synchronous movement of the two mobile racks jointly drives the connecting plate to move up and down, and the movement of the connecting plate drives the height of the yarn guide ring to be adjusted, thereby facilitating the adjustment of the height of the yarn guide ring.

[0011] Optionally, the positioning mechanism includes a long shell, one end of the long shell is fixedly connected to one end of the vertical shell, the top of the long shell is fixedly connected to a second motor, and the output end of the second motor passes through the top of the long shell and is fixedly connected to a screw rod, the bottom end of the screw rod is rotatably connected to the lower inner wall of the long shell, the outer surface of the screw rod is threadedly sleeved with a moving block, and one end of the moving block is fixedly connected to a long rod, a through-type long groove is opened on the inner wall of one side of the long shell for use with the long rod, and a positioning plate is fixedly connected to one side of the bottom end of the long rod, and the bottom end of the positioning plate is fixedly connected to an anti-slip plate.

[0012] By adopting the above technical solution, the second motor is started, and the output end of the second motor drives the screw to rotate, and the rotation of the screw drives the moving block to move in the long shell, and the movement of the moving block drives the long rod to move, and the movement of the long rod drives the positioning block to move downward, and the downward movement of the positioning block drives the anti-slide plate to move downward, so that the bottom end of the anti-slide plate moves to a position in contact with the top end of the connecting ring, so that the position of the long shell is positioned, and then the position of the yarn guide ring is positioned, thereby avoiding the position movement of the yarn guide ring during use.

[0013] Optionally, the rotating mechanism includes a third support, the bottom end of the third support is fixedly connected to the lower inner wall of the shell, the top of the third support is fixedly connected to a third motor, and the output end of the third motor is fixedly connected to a worm, the outer surface of the worm is meshed with a worm wheel, the inner wall of the worm wheel is fixedly connected to a hollow rod, and the bottom end of the hollow rod is rotatably connected to the lower inner wall of the shell, the top end of the hollow rod is fixedly connected to a swing plate, and the top side of the swing plate is fixedly connected to a vertical rod, the upper inner wall of the shell is provided with a through guide groove for use with the vertical rod, and the top end of the vertical rod passes through the guide groove and is hinged to the bottom end side of the connecting ring.

[0014] By adopting the above technical solution, the third motor is started, and the output end of the third motor drives the worm transmission. The worm transmission cooperates with the worm gear to rotate the worm gear. The rotation of the worm gear drives the hollow rod to rotate. The rotation of the hollow rod drives the swing plate to rotate. The rotation of the swing plate drives the vertical rod to move in a circular trajectory. The guide groove guides the vertical rod when it moves. The movement of the vertical rod drives the connection to rotate around the center of the hollow rod, thereby causing the yarn guide ring to rotate automatically, thereby improving the convenience of using the knitting mechanism.

[0015] Optionally, the clamping groove is in a ring shape, and the cross section of the clamping block is in a cross shape.

[0016] By adopting the above technical solution, the ring shape and the "cross" shape are arranged to facilitate the card block to be more firmly stuck in the card slot.

[0017] Optionally, two vertical slots for cooperating with the movable rack are provided on both inner walls of the vertical shell, and two ends of the corresponding movable racks are slidably connected to one inner wall of two corresponding vertical slots.

[0018] By adopting the above technical solution, the vertical slot is used in conjunction with the movable frame to facilitate the guidance of the movable frame during movement, so that the movable frame can move in the vertical direction.

[0019] Optionally, baffles used in conjunction with two movable racks are fixedly connected to the inner walls on both sides of the vertical shell, and the two movable racks are both U-shaped.

[0020] By adopting the above technical solution, the baffle is used in conjunction with the movable frame to facilitate limiting the moving position of the movable frame, thereby preventing the movable frame from moving out of the vertical shell.

[0021] Optionally, the outer surface of the moving block is slidably connected to the inner wall of the long shell, and one end of the long rod passes through the long slot, and the two ends of the long rod are respectively slidably connected to the inner walls on both sides of the long slot.

[0022] By adopting the above technical solution, the long groove is used in conjunction with the long rod to facilitate the guidance of the moving block during movement.

[0023] Optionally, the guide groove is annular, the vertical rod is cylindrical, and the outer surface of the vertical rod is in sliding contact with the inner wall of the guide groove.

[0024] By adopting the above technical solution, the circular ring and cylindrical arrangement are used to facilitate the guide groove to guide the vertical rod during movement.

[0025] Optionally, the six lifting mechanisms have the same internal structure, and the six positioning mechanisms have the same internal structure.

[0026] By adopting the above technical solution, the same internal structure facilitates the same operation method of the six lifting mechanisms and the six positioning mechanisms.

[0027] In summary, the present invention includes at least one of the following beneficial technical effects:

[0028] 1. The present invention provides a lifting mechanism to facilitate the free adjustment of the height of the yarn guide ring in the knitting mechanism, so as to better guide the yarn during knitting and improve the knitting effect of the knitting mechanism;

[0029] 2. The present invention provides a positioning mechanism to facilitate better positioning of the yarn guide ring and also facilitate adjustment of the distance between two adjacent yarn guide rings, thereby preventing the movement of the yarn guide ring during knitting and affecting its use;

[0030] 3. The present invention provides a rotating mechanism to facilitate automatic rotation of the yarn guide ring during knitting, saving time and effort and improving the convenience of using the knitting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0033] Figure 3 This invention Figure 2 A magnified schematic diagram of the structure in the middle.

[0034] Figure 4 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0035] Figure 5 It is a schematic diagram of the cross-sectional structure of the lifting mechanism of the present invention.

[0036] Figure 6 It is a schematic diagram of the cross-sectional structure of the positioning mechanism of the present invention.

[0037] Figure 7 This invention Figure 6 A magnified schematic diagram of the structure at point B in the middle.

[0038] Figure 8 It is a schematic diagram of the cross-sectional structure of the rotating mechanism of the present invention.

[0039] In the figure, 1. shell; 2. lifting mechanism; 21. connecting plate; 22. first support; 23. first motor; 24. tooth plate; 25. vertical slot; 26. movable frame; 27. baffle; 28. gear; 29. ​​round rod; 3. positioning mechanism; 31. positioning plate; 32. anti-skid plate; 33. long slot; 34. screw rod; 35. movable block; 36. second motor; 37. long shell; 38. long rod; 4. rotating mechanism; 41. vertical rod; 42. guide slot; 43. swing plate; 44. hollow rod; 45. third support; 46. third motor; 47. worm; 48. worm gear; 5. connecting ring; 6. slot; 7. block; 8. knitting machine body; 9. vertical shell; 10. yarn guide ring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1 -Attached Figure 8 , the present invention is described in further detail.

[0041] Example

[0042] A circular knitting machine with a needle selection function comprises a housing 1, the top end of which is fixedly connected to a knitting machine body 8, and the top end of which is rotatably connected to a connecting ring 5 via a rotating shaft.

[0043] A slot 6 is provided at the top of the connecting ring 5, and six blocks 7 are slidably connected to the inner wall of the slot 6. The slot 6 is ring-shaped, and the cross-section of the block 7 is a "cross" shape. The tops of the six blocks 7 are fixedly connected to a vertical shell 9. The slot 6 is used in conjunction with the block 7 to facilitate the movement of the block 7 in the slot 6, thereby adjusting the distance between two adjacent vertical shells 9.

[0044] The six vertical shells 9 are all provided with a lifting mechanism 2. The internal structure of the six lifting mechanisms 2 is the same. The same structure does not mean the same operation steps. The tops of the six lifting mechanisms 2 are all fixedly connected to the yarn guide ring 10. The lifting mechanism 2 serves to facilitate the free adjustment of the height position of the yarn guide ring 10.

[0045] The lifting mechanism 2 includes a first support 22 and a connecting plate 21. One end of the first support 22 is fixedly connected to one end of the vertical shell 9. The top of the connecting plate 21 is fixedly connected to the bottom end of the yarn guide ring 10, so that the connecting plate 21 moves to drive the yarn guide ring 10 to move up and down. The top of the first support 22 is fixedly connected to the first motor 23. The first support 22 supports the first motor 23, and the first motor 23 drives the lifting mechanism 2.

[0046] The output end of the first motor 23 passes through the upper part of one end of the vertical shell 9 and is fixedly connected to a round rod 29, so that the output end of the first motor 23 drives the round rod 29 to rotate, and the end of the round rod 29 facing away from the output end of the first motor 23 is rotatably connected to the inner wall of one side of the vertical shell 9, so that the vertical shell 9 serves to facilitate the positioning of the round rod 29;

[0047] Two gears 28 are fixedly sleeved on the outer surface of the round rod 29. The rotation of the round rod 29 drives the two gears 28 to rotate synchronously. The outer surfaces of the two gears 28 are meshed with a toothed plate 24, and the teeth of the gears 28 and the toothed plate 24 have the same shape. The synchronous rotation of the two gears 28 drives the two toothed plates 24 to move synchronously. One end of the two toothed plates 24 is fixedly connected to a moving frame 26, which facilitates the movement of the toothed plate 24 and the moving frame 26.

[0048] The two ends of the two mobile frames 26 are respectively slidably connected to the inner walls of the two sides of the vertical shell 9, which plays a role in facilitating the vertical shell 9 to guide the mobile frames 26 when they move. The inner walls of the two sides of the vertical shell 9 are each provided with two vertical grooves 25 used in conjunction with the mobile frames 26. The two ends of the corresponding mobile frames 26 are respectively slidably connected to the inner walls of one side of the two corresponding vertical grooves 25. The vertical grooves 25 cooperate with the mobile frames 26 to facilitate better guiding the mobile frames 26 when they move, so that the mobile frames 26 can move in the vertical direction.

[0049] The inner walls of both sides of the vertical shell 9 are fixedly connected with baffles 27 used in conjunction with the two mobile racks 26, and the two mobile racks 26 are both "U"-shaped. The baffles 27 cooperate with the mobile racks 26 to facilitate the movement of the mobile racks 26.

[0050] The top ends of the two movable frames 26 are fixedly connected to the bottom ends of the connecting plate 21, respectively, so that the two movable frames 26 can move up and down and drive the connecting plate 21 to move up and down, thereby adjusting the height of the yarn guide ring 10 connected to the connecting plate 21.

[0051] One end of each of the six vertical shells 9 is provided with a positioning mechanism 3 used in conjunction with the vertical shell 9, which facilitates positioning of the vertical shell 9 and further positioning of the yarn guide ring 10. The six positioning mechanisms 3 have the same internal structure, which facilitates the same operation steps of the positioning mechanisms 3. The positioning mechanism 3 includes a long shell 37, one end of the long shell 37 is fixedly connected to one end of the vertical shell 9, and the long shell 37 plays a connecting role. The top end of the long shell 37 is fixedly connected to a second motor 36, and the second motor 36 plays a role in driving the positioning mechanism 3;

[0052] The output end of the second motor 36 passes through the top of the long housing 37 and is fixedly connected to the screw rod 34, so that the output end of the second motor 36 drives the screw rod 34 to rotate, and the bottom end of the screw rod 34 is rotatably connected to the lower inner wall of the long housing 37, which facilitates the long housing 37 to position the screw rod 34;

[0053] The outer surface of the screw rod 34 is threadedly connected to a moving block 35, which is convenient for the screw rod 34 to rotate and drive the moving block 35 to move. The outer surface of the moving block 35 is slidably connected to the inner wall of the long shell 37. The long shell 37 plays a role in guiding and limiting the movement of the moving block 35. One end of the moving block 35 is fixedly connected to a long rod 38, which is convenient for the moving block 35 to move and drive the long rod 38 to move. The long rod 38 plays a connecting role.

[0054] A through-type long slot 33 for use with the long rod 38 is formed on the inner wall of one side of the long shell 37, and one end of the long rod 38 passes through the long slot 33. The two ends of the long rod 38 are respectively slidably connected to the inner walls of the two sides of the long slot 33. The long slot 33 serves to guide and limit the movement of the long rod 38.

[0055] The bottom end of the long rod 38 is fixedly connected to a positioning plate 31. The bottom end of the positioning plate 31 is fixedly connected to an anti-skid plate 32 used in conjunction with the connecting ring 5. The top of the connecting ring 5 is also made of anti-skid material, which makes it easy for the long rod 38 to move and drive the positioning plate 31 to move. When the positioning plate 31 moves and drives the anti-skid plate 32 to move downward, the bottom end of the anti-skid plate 32 contacts the top end of the connecting ring 5. The friction between the contact surface of the anti-skid plate 32 and the connecting ring 5 is used to position the vertical shell 9, thereby positioning the position of the yarn guide ring 10.

[0056] The lower inner wall of the housing 1 is provided with a rotating mechanism 4 used in conjunction with the connecting ring 5, and the rotating mechanism 4 serves to facilitate the rotation of the connecting ring 5;

[0057] The rotating mechanism 4 includes a third support 45, the bottom end of the third support 45 is fixedly connected to the lower inner wall of the housing 1, and the top end of the third support 45 is fixedly connected to a third motor 46. The third support 45 supports the third motor 46, and the third motor 46 drives the rotating mechanism 4.

[0058] A worm 47 is fixedly connected to the output end of the third motor 46, so that the third motor 46 rotates to drive the worm 47. The outer surface of the worm 47 is meshed with a worm wheel 48. The threads on the outer surfaces of the worm 47 and the worm wheel 48 match, so that the worm 47 drives the worm wheel 48 to rotate.

[0059] The inner wall of the worm gear 48 is fixedly connected to a hollow rod 44, and the bottom end of the hollow rod 44 is rotatably connected to the lower inner wall of the housing 1 via a rotating shaft, so that the rotation of the worm gear 48 drives the hollow rod 44 to rotate. At the same time, the housing 1 serves to facilitate the positioning of the hollow rod 44. The top end of the hollow rod 44 is fixedly connected to a swing plate 43, and the rotation of the hollow rod 44 drives the swing plate 43 to rotate.

[0060] A vertical rod 41 is fixedly connected to one side of the top of the swing plate 43, so that the swing plate 43 rotates and drives the vertical rod 41 to move in a circular trajectory;

[0061] The upper inner wall of the housing 1 is provided with a through guide groove 42 for use with the vertical rod 41. The guide groove 42 is annular, and the vertical rod 41 is cylindrical. The outer surface of the vertical rod 41 is in sliding contact with the inner wall of the guide groove 42. The guide groove 42 cooperates with the vertical rod 41 to better guide the vertical rod 41 when it rotates.

[0062] The top end of the vertical rod 41 passes through the guide groove 42 and is hinged to one side of the bottom end of the connecting ring 5 through a rotating shaft, so that the movement of the vertical rod 41 drives the connecting ring 5 to rotate around the center of the hollow rod 44, thereby causing the yarn guide ring 10 to rotate automatically.

[0063] Working principle: First, the distance between two adjacent yarn guide rings 10 is adjusted to a suitable position by using the card slot 6 and the card block 7;

[0064] Then, the second motor 36 is started through the positioning mechanism 3. The output end of the second motor 36 drives the screw rod 34 to rotate. The rotation of the screw rod 34 drives the moving block 35 to move in the long shell 37. The movement of the moving block 35 drives the long rod 38 to move.

[0065] At the same time, the long groove 33 serves to guide and limit the long rod 38 when it moves. The movement of the long rod 38 drives the positioning plate 31 to move. When the positioning plate 31 moves, the anti-slide plate 32 moves downward so that the bottom end of the anti-slide plate 32 contacts the top end of the connecting ring 5. The friction between the contact surface of the anti-slide plate 32 and the connecting ring 5 is used to position the vertical shell 9.

[0066] Then, the first motor 23 is started through the lifting mechanism 2. The output end of the first motor 23 drives the round rod 29 to rotate. The rotation of the round rod 29 drives the two gears 28 to rotate synchronously. The synchronous rotation of the two gears 28 drives the two gear plates 24 to move synchronously.

[0067] The tooth plate 24 moves to drive the moving frame 26 to move, the vertical slot 25 cooperates with the moving frame 26 to play a role in better guiding the moving frame 26, and the baffle 27 cooperates with the moving frame 26 to play a role in limiting the moving position of the moving frame 26;

[0068] The two movable frames 26 move up and down and together drive the connecting plate 21 to move up and down, so that the height of the yarn guide ring 10 connected to the connecting plate 21 is adjusted to a suitable height for use;

[0069] Then the yarn is passed through the yarn guide ring 10 and the needle hole on the knitting machine body 8, and then the third motor 46 is started through the rotating mechanism 4. The third motor 46 rotates to drive the worm 47, and the worm 47 drives the worm wheel 48 to rotate;

[0070] The rotation of the worm gear 48 drives the hollow rod 44 to rotate. The housing 1 facilitates the positioning of the hollow rod 44. The rotation of the hollow rod 44 drives the swing plate 43 to rotate. The rotation of the swing plate 43 drives the vertical rod 41 to move in a circular trajectory.

[0071] At the same time, the guide groove 42 cooperates with the vertical rod 41 to better guide the vertical rod 41 when it rotates. The movement of the vertical rod 41 drives the connecting ring 5 to rotate around the center of the hollow rod 44, so that the yarn guide ring 10 can better guide the yarn.

[0072] Then, start the knitting machine body 8 to perform the knitting operation.

[0073] The embodiments of this specific embodiment are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Identical components are denoted by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A circular knitting machine with a needle selection function, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a knitting machine body (8), the top of the housing (1) is rotatably connected to a connecting ring (5), the lower inner wall of the housing (1) is provided with a rotating mechanism (4) used in conjunction with the connecting ring (5), the top of the connecting ring (5) is provided with a card slot (6), the inner wall of the card slot (6) is slidably connected to six card blocks (7), and the tops of the six card blocks (7) are all fixedly connected to a vertical housing (9), one end of each of the six vertical housings (9) is provided with a positioning mechanism (3) used in conjunction with the vertical housing (9), the interior of each of the six vertical housings (9) is provided with a lifting mechanism (2), and the tops of the six lifting mechanisms (2) are all fixedly connected to a yarn guide ring (10); The positioning mechanism (3) includes a long shell (37), one end of the long shell (37) is fixedly connected to one end of the vertical shell (9), the top end of the long shell (37) is fixedly connected to the second motor (36), and the output end of the second motor (36) passes through the top end of the long shell (37) and is fixedly connected to the screw rod (34), the bottom end of the screw rod (34) is rotatably connected to the lower inner wall of the long shell (37), the outer surface of the screw rod (34) is threadedly sleeved with a moving block (35), and one end of the moving block (35) is fixedly connected to a long rod (38), a through-type long groove (33) for matching the long rod (38) is opened on the inner wall of one side of the long shell (37), and the bottom end of the long rod (38) is fixedly connected to a positioning plate (31), and the bottom end of the positioning plate (31) is fixedly connected to an anti-slip plate (32); The rotating mechanism (4) includes a third support (45), the bottom end of the third support (45) is fixedly connected to the lower inner wall of the housing (1), the top end of the third support (45) is fixedly connected to a third motor (46), and the output end of the third motor (46) is fixedly connected to a worm (47), the outer surface of the worm (47) is meshedly connected to a worm wheel (48), the inner wall of the worm wheel (48) is fixedly connected to a hollow rod (44), and the bottom end of the hollow rod (44) is rotatably connected to the lower inner wall of the housing (1), the top end of the hollow rod (44) is fixedly connected to a swing plate (43), and the top side of the swing plate (43) is fixedly connected to a vertical rod (41), the upper inner wall of the housing (1) is provided with a through-type guide groove (42) used for matching the vertical rod (41), and the top end of the vertical rod (41) passes through the guide groove (42) and is hinged to the bottom side of the connecting ring (5); The outer surface of the moving block (35) is slidably connected to the inner wall of the long shell (37), and one end of the long rod (38) passes through the long slot (33), and the two ends of the long rod (38) are respectively slidably connected to the inner walls on both sides of the long slot (33).

2. The circular knitting machine with needle selection function according to claim 1, characterized in that: The lifting mechanism (2) comprises a first support (22), one end of the first support (22) is fixedly connected to one end of the vertical shell (9), the top end of the first support (22) is fixedly connected to a first motor (23), and the output end of the first motor (23) passes through one end of the vertical shell (9) and is fixedly connected to a round rod (29), one end of the round rod (29) is rotatably connected to an inner wall of one side of the vertical shell (9), two gears (28) are fixedly sleeved on the outer surface of the round rod (29), and the outer surfaces of the two gears (28) are meshed with toothed plates (24), one end of the two toothed plates (24) are fixedly connected to a moving frame (26), and the two ends of the two moving frames (26) are respectively slidably connected to the inner walls of both sides of the vertical shell (9), the top ends of the two moving frames (26) are commonly fixedly connected to a connecting plate (21), and the top end of the connecting plate (21) is fixedly connected to the bottom end of the yarn guide ring (10).

3. The circular knitting machine with needle selection function according to claim 1, characterized in that: The clamping groove (6) is in a ring shape, and the cross section of the clamping block (7) is in a cross shape.

4. The circular knitting machine with needle selection function according to claim 2, characterized in that: The inner walls on both sides of the vertical shell (9) are provided with two vertical slots (25) for use with the movable frame (26), and the two ends of the corresponding movable frame (26) are respectively slidably connected to the inner walls of one side of the two corresponding vertical slots (25).

5. The circular knitting machine with needle selection function according to claim 2, characterized in that: The inner walls on both sides of the vertical shell (9) are fixedly connected with a baffle (27) used in conjunction with two movable racks (26), and the two movable racks (26) are both in a "U" shape.

6. The circular knitting machine with needle selection function according to claim 1, characterized in that: The guide groove (42) is annular, the vertical rod (41) is cylindrical, and the outer surface of the vertical rod (41) is in sliding contact with the inner wall of the guide groove (42).

7. The circular knitting machine with needle selection function according to claim 1, characterized in that: The six lifting mechanisms (2) have the same internal structure, and the six positioning mechanisms (3) have the same internal structure.

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